Before his victory over American Charles Martin for the IBF heavyweight world title, Joshua, 26, suggested Fury was jealous of his physique and afterwards said he would “walk through” Fury to unify the division.

Fury replied on Wednesday by claiming Joshua “looked like a pumped-up weightlifter, out of his mind on drugs” and then said Joshua’s opponent Martin “came to lay down and had as much fight in him as that glass of water right there. Zero.”

He also said that Klitschko was “10 times the man” of his British rival.

Tyson Fury (right) beat Wladimir Klitschko on points in Germany last year

Speaking to BBC Sport’s boxing correspondent Mike Costello, the WBA and WBO title-holder, who defeated Ukrainian Klitschko on points in Dusseldorf last November, Fury then claimed he has “no motivation” for the upcoming rematch, suggesting he was currently seven stone above his fighting weight.